Fumigator and disinfector.



J. A. BUTTRESS. A FUMIGATOR AND DISINFECTOR.

J. A. BUTTRESS.

FUMIGATOR AND DISINFECTOR.

APPLxcATloN FILED Nov. 2. 1914.

LM730 Patented. July 2o, 1915.

* 2 SHEETS-SHEET 2.

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l FUMIGATOR AND DISINFECTOR.

Specification of Letters Patent.

Patented J uly 20, i915.

Application led November 2, 1914:. Serial No. 869,992.

tion, and in general for sterilization pura., poses, and the eradication of domestic pests An' object of this invention is to provide a portable device in which the engenderment of germicidal'and insecticidal fumes may be occasioned quickly and without condensation and from which they may be led instantly on evolution to the place oi7 application to the end that during the passage of fumes to the object or locus to be disinfected, they will preserve their full strength and remain chemically unadected and undissociated.

in apparatuses designed for` a similar purpose and as used today, the evolution of the gases or fumes of acid combinations is efected in a receptacle disposed Within a container 'within which the evolved fumes are diffused and confined until they escape. A large proportion, however, oi these gases re,- main within the container on account of its large area, and those fumes of vapors evolved subsequently in the receptacle by another acid charge are weakened andI caused to condense by such remaining fumes and the moisture arising from the residual products from which the fumes have been obtainedu ln consequence or" such condensation utilized and the residue discharged, before another charge is supplied.

Other objects are to provide an apparatus in which the charges of fume producing acids ma be simultaneousl y let into the generatng c amber in such predetermined pron portions necessary for the .formation of the most deadly gases; to provide a gas generator wherein the heat engendered by the gaseous evolution occasioned by the reaction of so one acid on another, is conserved, whereby the speed of liberation of the fumes is ac c celerated and purity thereof increased, and

iinally to provide an apparatus, all parts of which may be quickly assembled and diss0- ciated.

lVith these and other objects in view, this invention consists of the features and details separately and in combination, described in connection with the accompanying drawing and then more particularly pointed out in the claims.

ln the drawings: Figure l is 'a rear elevation 0i an apparatus embodying my invention, and Fig. 2 is a sectional elevation of one halt" of the apparatus.

My invention comprises a fume generating chamber l, composed of two sections A and B, having flanges 2 and 3 respectively, secured together and `to a supporting plate 4, by bolts 5, the plate being further supported 4trom a wheeled axle 6, blbars 7. rIhe upper section A, of said chamberis formed with a tapering portieri 8, having at its upper end a lateral opening 9, communicating with a conduitJ l0, bolted onto the outside of said tapering portion, and serving` to convey the vfumes through a suitable hose 11, to the place of application. The interior of said ,chamber isprovided with a lining of lead l2, or other acid resisting material, and covstp ers all portions of the interior, as shown.

The section B of said chamber is provided with a tapering outlet 13, formed in an iii-- ternally threaded extension 14, on which is screwed a cap 15, which. is arranged to hold a tapering valve seat 16 in snug engagement with the said outlet i3 and also to hold the flange 17 of a discharge pipe 18 against the bottom of said valve seat to form a perfect joint and prevent leakage. The discharge pipe 18 extends through a packing nut 19, having a flange 20, arranged to he drawn and held against the acid proof lining 21, of the top 22 of a residue tank 23, by a lock nut 2st. A cap 25, is screwed on said packing nut 19 to hold a suitable packing 26 in place.

Disposed centrally 'of and extending through the upper end 27 of said section A of said. chamber, is a valve stem 28, incased in a lead sheath 29, and having a tapering end 30 which rests on said seat 16 and gi Liemers closes the opening therein. The stem( is suitably packed, the packing 31 being held in place by a packing nut 32, screwed in said upper end 27. The upper p ortion of said stem is turned down to form a shoulder 33 on which rests a collar 34, against which the tension of a spring 35 is exd'xted to hold said valve end 30 in its seat." The other end of said spring Ybears against the top of a housing 36 which is screwed on the end 27 of said section B. On the end of said stem 28, which extends through said housing 36, is attached a lever 36 fulcrumed in a suitable support 37 integral with said housing, and serving to unseat said valve stem to permit the residual liquids in the chamber to discharge. Extending angularly within said section A of the generating chamber, is a pipe v37', of lead or other acid resisting composition, suitably packed by packing Y material 38, which is held in place by a packing nut 39 screwed in a cap 40, that is bolted onto the side of said section. rlhat end of the pipe 37 which is within the chamber, is provided with a plurality 'of slots 41, through which liquid may escape, a ball valve 42 loosely disposed in said end serving to be forced in the opening in said pipe by, and prevent the escape of any of the generated fumes, as hereinafter described. The other end of sii-id Pipe 37', is

4.provided with a flange 43, whieh` is held tightly against a conical hollow valve seat 44 in a housing 45, by a nut 46. Said housing 45v is formed with an annular internally threaded extension 45', to receive the threaded end of a gage cylinder 47, having lest a slot 48, through which may be viewed the graduating marks in a gage glass 49, which is held against a lcaden seat onsaid housing 45, by a nut 51 screwed in the upper part of said cylinder 47, and also provided with a leaden ring 52,. whichengages the upperv part of said glass gage 49. Above said nut 51, and engaging the threads in said cylinder, is a guide 53, Jfor a stem 54, whose end 55 is conical and arranged to rest on said seat 44, a spring 56, bearing against the upper end of said guide and a collar 56 on said stem, serving to hold' saidfv'alve end 55 normally in engagement with said scat. Said stem for a portion of its length is incased in a sheath 57 of acid resisting material. The guide 53 is slotted as at 58, and through this slot extends a lever 59 which straddlcs and is pinned on said collar 56 on said stem, the guide being-provided with a fulcrum 60 onwhich the lever 59 bearsl in operating the valve stem.

The housing 45 is formed with a lateral ported extension 61, having a threaded end 62, for a cap 63, which is arranged to clamp the flange 64 of an inclined pipe 65, against said extension. The other end of said pipe 65, is provided with a Bange 66', which topacking nut 73, screwed in aneXtension 74 on said reservoir, and said valve end 70 is normally held 1n engagement with said seat 6 7, by a spring 75 bearing against a collar 76, which together with an operating lever 77, is pinned on said stem, and against the top of a yoke 78,'forming a stem: guide. This yoke 78 is screwed onto the threaded extension A74 of said reservoir 68, and is slotted to permit of the operation of said lever 7 7, on the fulcrum 79 on said guide. The reservoir 68 has a ported lateral extension, threaded externally to receive a cap 80, for connecting the flange 81 of a pipe 82 with said extension. |This pipe 82, leads from a trap 83, screwed onto a threaded sieve 84, having a shoulder85, which is drawn' snugly against the lining 86 of a cyanid tank 87, by a lock nut 88. The lower end of said sieve extends below the outlet in said trap 83 to said pipe 82, in order to cause foreign substances to collect in the bottom of the trap, from which they may be drawn by manipulation of the valve-controlling lever S9. On the opposite side of the section A of said chamber, and extending angularly therein, is a pipe 90, identical in construe` tion as the pipe 37, except being of smaller diameter, for reason to appear hereinafter.

This pipe 90 leads from a gage 91 which is di-ametrically larger than the gage 49, and in which is disposed a valve stem 92, operable by a" level` 93, to permit the discharge of fiuid from said gageto said pipe 90 and into said chamber. This diiierence in the size of the gages is made for the purpose of enabling the graduation to correspond, while -in fact the 'quantities represented by the Fluid is let into said graduation diiier. gage 91, through a pipe 94, leading from a reservoir 9o, the outlet from which 1s controlled by a valve stem 96 operable by a it has been considered 'unnecessary to detail them again.

Each tank 87 and 100, is provided with a strainer 101, held therein by a lock nut 102, and covered by a cap 103,\ to prevent evaporation and entrance of dirt and other foreign matters.A

The levers 59 and 93, in order to be simultaneously operable, may be connected by a bar 105, such simultaneous manipulation be; ing highly essential for the reason that unless the cyanid and sulfuric acid are admitted to the chamber l, in exactly predetermined proportions, as developed by experiments, the resultant gas will not' be of the strength necessary for the destruction of scale and insects, or of absolute dryness necessary for thorough fumigation without injury to trees and fumigating coverings.

vln operation, cyanid is let into the reservoir 68, from the tank 87, through the trap 83, and sulfuric acid is admitted to the reservoir 95, from the tank 100, through the trap 99. The levers 77 and 97, are then operated to lift the valve stems 71 and 96, respectively, in the reservoirs 68 and 95, thereby causing the liquids therein to gravitate to the gages 48 and 91, respectively. Thereupon the connecting bar 104C is pulled down, to cause the levers 59 and 93 to unseat the valve stems 54 and 92, respectively, in

the gages 48 and 91, and cause the liquids therein to empty through the pipes 37 and 90 in the chamber l.

As stated, the charges of cyanid and sulfuric acid are proportioned in ilfe gages, and remain proportioned during their flow into the chamber. ln this manner the generation cf the gas or fume occurs uniformly during the mixing process of the two fluids, and spontaneously, the gas liberated being of the greatest obtainable strength and dryness. ln order that no condensation should take place, the upper section A is formed with the tapering portion 8, as referred to, whereby angles and corners, that would produce friction, are avoided and the gas will escape instantly on evolution to the place of application, free from any moisture,A that has been found to spot and destroy the tents as Well as young trees. The shape of the section B affords an excellent drain for all of the liquids after liberation of the fumes or gas, and none remains therein to contaminate or weaken a subsequently deposited charge. 'lhe drained liquid'is collected in said tank 23, from which it may be drawn through a suitable valved outlet 23.

As seen, the section B of the chamber 1, is of a tapering form, preferably conical, for the purpose of insuring the most speedy and cleanest gravital discharge of the residual liquids therefrom, in order that no liquid will be leftv therein.

What I claim is:

l. A fumigator and disinfector comprising a generating chamber having anopening in the bottom thereof and formed with an upwardly tapering portion having a fume outlet, a spring pressed valve stem extending through said chamber and normally closing the opening in the bottom thereof, a

ing a generating chamber having an openc ing in the bottom thereof, and formed with an upwardly tapering portion having a fume outlet, an acid resisting lining for said chamber, a conical valvel seat in said opening, means to hold said valve seat in said bottom, a spring pressed valve stem extending centrally through said chamber, a lever on the end of said valve stem to operate same, a plurality of pipes extending angularly within said chamber, and means to admit fluid simultaneously through bothpipes. to said chamber. t

3. A fumigator and disinfector comprising a generating chamber having a conical opening in the bottom thereof and formed with an upwardly tapering portion having a fume outlet, a conical valve seat in said opening, a valve stem extending' longitudinally through said chamber and having a tapering end, means engaging said'stem to hold the tapering end thereof in engagement with said seat, pipes leading into said chamber from opposite sides, and means to admit iuids through said pipes to said chamber.

4. A fumigator and disinfector comprising a generating chamber having an'opening in vthe bottom thereof, and formed with an upwardly tapering portion having afume outlet, a valve stem extending longitudinally through said chamber, means to normally hold said valve stem in said opening7 an operating lever for said stem, a plurality of pipes extending within said cham` ber, a cyanid tank, a sulfuric acid tank, and means to admit said fluids respectively through said pipes to said chamber.

5.A fumigator and disinfector comprising a generating chamber having in the bottom thereof an opening, and formed With an upwardly extending tapering portion having. a fume outlet, a valve stem to normallyv seal the opening in said chamber, a cyanid and a sulfuric acid tank, a gage on each side of said chamber, means to admit cyand and sulfuric acid, respectively to said gages, pipes leading from said gages into said chamber, valve stems in said gages to normally seal the outlets therefrom, and means to simultaneously operate said valve stems.'

A fumigator and disinfector comprising a generating chamber having in the bottom thereof an opening, and formed With an upwardly extending tapering portion having a fume outlet, a valve 'stem to normally seal the openin in said chamber, a cyanid tank and a sul ric acid tank, pipes laor leading into said chamber, means to admit a charge of cyanid and a vchargeof sulfuric acid simultaneously through said pipes to said chamber, and means in said pipes. toA 5 prevent escape of fumes therethrough.

7. A fumigator and disinfector compris- `ing a generating chamber having an opening in the bottom thereof and formed With an upwardly extendingtapering portion having a fume outlet, a lvalve stem extending longitudinally through said chamber to normally seal the opening therein, a cya-` nid tank and a sulfuric acid tank, gages for the cyanid and sulfuric acid, pipes leading 15 from said gages to said chambers, valve stems in said gages toinormally seal the outlets therefrom, means to simultaneously control said valve stems, equalizing reservoirs, pipes leading from said reservoirs to said gages, valves to seal the outlets from said reservoirs, traps connected With said tanks, and pipes leading from said traps to said reservoirs.

In-testimony Whereoll have set my hand in the presence of two Witnesses.

ANTON GLOETZNER, Jr., E. L. STILWELL. 

